Li Wenlin, Li Chong, Song Heshan
School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China.
Phys Rev E. 2017 Feb;95(2-1):022204. doi: 10.1103/PhysRevE.95.022204. Epub 2017 Feb 6.
We investigate the quantum synchronization phenomenon of the complex network constituted by coupled optomechanical systems and prove that the unknown identical quantum states can be shared or distributed in the quantum network even though the topology is varying. Considering a channel constructed by quantum correlation, we show that quantum synchronization can sustain and maintain high levels in Markovian dissipation for a long time. We also analyze the state-sharing process between two typical complex networks, and the results predict that linked nodes can be directly synchronized, but the whole network will be synchronized only if some specific synchronization conditions are satisfied. Furthermore, we give the synchronization conditions analytically through analyzing network dynamics. This proposal paves the way for studying multi-interaction synchronization and achieving effective quantum information processing in a complex network.
我们研究了由耦合光机械系统构成的复杂网络的量子同步现象，并证明即使拓扑结构发生变化，未知的相同量子态也可以在量子网络中共享或分布。考虑由量子关联构建的信道，我们表明量子同步可以在马尔可夫耗散中长时间维持并保持在高水平。我们还分析了两个典型复杂网络之间的态共享过程，结果预测相连的节点可以直接同步，但只有满足一些特定的同步条件，整个网络才会同步。此外，我们通过分析网络动力学解析地给出了同步条件。该提议为研究多相互作用同步以及在复杂网络中实现有效的量子信息处理铺平了道路。
